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Building Energy Ratings in Co. Westmeath
26,287 certificates · median 192 kWh/m²/yr · rank 30 of 52 counties on the share rated B3 or better
The national median is 178 kWh/m²/yr. 35.5% of the certificates on the 2009 scale are B3 or better; 22.2% are E, F or G.
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Ratings
2009 scale, A1 to E2 — 22,044 certificates
| Rating | Certificates | Share |
|---|---|---|
| A1 | 830 | 3.8% |
| A2 | 1,853 | 8.4% |
| A3 | 991 | 4.5% |
| B1 | 843 | 3.8% |
| B2 | 1,072 | 4.9% |
| B3 | 2,229 | 10.1% |
| C1 | 2,417 | 11.0% |
| C2 | 2,722 | 12.3% |
| C3 | 2,741 | 12.4% |
| D1 | 2,443 | 11.1% |
| D2 | 1,924 | 8.7% |
| E1 | 1,072 | 4.9% |
| E2 | 907 | 4.1% |
2026 scale, A0 to E — 1,368 certificates
| Rating | Certificates | Share |
|---|---|---|
| A0 | 282 | 20.6% |
| A | 184 | 13.5% |
| B | 454 | 33.2% |
| C | 310 | 22.7% |
| D | 94 | 6.9% |
| E | 44 | 3.2% |
F and G — the same on both scales
| Rating | Certificates | Share of all certificates |
|---|---|---|
| F | 1,063 | 4.0% |
| G | 1,812 | 6.9% |
⚠️ The two scales are shown apart on purpose: adding a « B » from the 2026 scale to « B1+B2+B3 » from the 2009 scale would produce a number that exists nowhere. F and G belong to both, so they are counted in neither distribution and shown on their own. How the two scales compare.
What the certificates measure
| Certificates | 26,287 |
| Median energy use | 192 kWh/m²/yr |
| Median CO₂ | 43.9 kg CO₂/m²/yr |
| Median floor area | 112 m² |
| Median wall U-value | 0.49 W/m²K |
| Median roof U-value | 0.21 W/m²K |
| Median floor U-value | 0.41 W/m²K |
| Median window U-value | 2.70 W/m²K |
| Median heating system efficiency | 86% |
| Certificates with solar PV | 510 (1.9%) |
| Median renewable energy ratio | 0.00 |
| National median energy use | 178 kWh/m²/yr |
By period of construction
| Built | Certificates | Median kWh/m²/yr | Median wall U-value |
|---|---|---|---|
| before 1900 | 564 | 375 | 1.47 |
| 1900–1944 | 2,404 | 355 | 1.41 |
| 1945–1969 | 2,134 | 293 | 0.88 |
| 1970–1979 | 2,487 | 253 | 0.60 |
| 1980–1990 | 2,599 | 230 | 0.57 |
| 1991–1999 | 3,250 | 209 | 0.55 |
| 2000–2004 | 5,407 | 189 | 0.55 |
| 2005–2009 | 3,967 | 149 | 0.37 |
| 2010–2018 | 468 | 71 | 0.23 |
| 2019 or later | 3,007 | 37 | 0.17 |
Periods with fewer than 11 certificates are not shown separately.
By dwelling type
| Type | Certificates | Median kWh/m²/yr | Median floor area (m²) |
|---|---|---|---|
| Detached house | 10,389 | — | — |
| Semi-detached house | 7,806 | — | — |
| Mid-terrace house | 2,329 | — | — |
| End of terrace house | 1,408 | — | — |
| Top-floor apartment | 1,291 | — | — |
| Ground-floor apartment | 1,219 | — | — |
| Mid-floor apartment | 980 | — | — |
| House | 503 | — | — |
| Maisonette | 310 | — | — |
| Apartment | 42 | — | — |
Main space heating fuel
| Fuel | Certificates | Share | Median kWh/m²/yr |
|---|---|---|---|
| Heating Oil | 13,153 | 50.0% | — |
| Electricity | 7,100 | 27.0% | — |
| Mains Gas | 2,965 | 11.3% | — |
| Solid Multi-Fuel | 1,288 | 4.9% | — |
| Bulk LPG (propane or butane) | 599 | 2.3% | — |
| Manufactured Smokeless Fuel | 542 | 2.1% | — |
| Wood Pellets (bulk supply for | 213 | 0.8% | — |
| Sod Peat | 135 | 0.5% | — |
| Wood Pellets (in bags for seco | 53 | 0.2% | — |
| Bottled LPG | 49 | 0.2% | — |
One certificate is one assessment of one dwelling, not one dwelling: a home rated twice appears twice. How this is counted.